Basic
$1,265 – $3,406 each
About 100-pint-per-day whole-house unit ducted into the HVAC return, onboard humidistat, condensate to a floor drain by gravity

Photo: Dchristle at English Wikipedia · Public domain · Source
Supply and install a whole-house (ducted) dehumidifier tied into the HVAC system or a basement/crawl unit, including condensate drain.
Dehumidifier in Seattle, Washington typically costs $1,489 to $4,008 each as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Seattle are 19.0% higher than the national average for dehumidifier.
National average: $1,300 – $3,500 each
$1,265 – $3,406 each
About 100-pint-per-day whole-house unit ducted into the HVAC return, onboard humidistat, condensate to a floor drain by gravity
$1,489 – $4,008 each
About 100-pint-per-day whole-house unit ducted into the HVAC return, wall humidistat control, condensate piped to a drain
$1,861 – $5,009 each
About 100-pint-per-day high-efficiency whole-house unit with upgraded filter, dedicated supply ducting, wall dehumidistat, condensate pump
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $608 – $1,638 | each |
| Labor | labor | $610 – $1,642 | each |
| Supplies & Other | supplies | $162 – $437 | each |
| Equipment & Disposal | equipment | $108 – $291 | each |
Dehumidifier with drain hose running to a basement floor drain
Photo: Rex Roof · CC BY 2.0 · Source
Find a pro to do thisLabor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local dehumidifier contractors in Seattle for personalized quotes based on your specific project.